Joist hanger nail sizes

Reply

  #1  
Old 06-02-09, 11:51 PM
J
Member
Thread Starter
Join Date: Mar 2009
Location: USA
Posts: 78
Received 0 Votes on 0 Posts
Joist hanger nail sizes

I was looking at the Simpson Strong Tie site and specifically at the 2x10 double hanger (LSU210-2 I think it was.) They specify all 16d common nails for that one. I don't understand how that can be since a 2x10 is only 1.5 inches wide and 2 of them are 3 inches, and a 16d common is 3.5 inches long. What am I missing?
 
  #2  
Old 06-03-09, 05:12 AM
chandler's Avatar
Banned. Rule And/Or Policy Violation
Join Date: Dec 2005
Location: USA
Posts: 39,964
Received 6 Votes on 6 Posts
Jeff, 16d indicates the thickness of the shaft of the nail. Use the 1 1/2" hot dipped galvanized nails for face nailing the hanger to the 2x10, then 2 1/2" hot dipped galvanized nails for angle nailing through the holes connecting the joist to the rim board. They will cross and won't protrude past the 2x10. Don't use the 1 1/2" nails on the angle holes, as they are not going to give any holding power. These nails are located in the joist hanger section of your store.

Larry
 
  #3  
Old 06-03-09, 06:50 AM
J
Member
Thread Starter
Join Date: Mar 2009
Location: USA
Posts: 78
Received 0 Votes on 0 Posts
Their catalog is pretty specific about the nails specified, and that doesn't seem to be what they say. The list the smaller nail size and length where appropriate. But for these it's specifically all 16d (full length implied.)

I'm looking at the DBL 2x10, LUS210-2 line.
http://www.strongtie.com/ftp/catalog...-p062-p064.pdf

The nails are shown here
Nails
 
  #4  
Old 06-03-09, 12:00 PM
G
Member
Join Date: Mar 2009
Location: WA
Posts: 1,165
Received 0 Votes on 0 Posts
Hi Jeff. The Simpson book is very specific about nail substitutions. When using 1-1/2" nails instead of 3-1/2" nails, you have to adjust the load:

Nails

The "d" in nails is for: The origin of some Nail Names

A 10d and a 16d sinker have the same shaft diameter, but different length. Generally, it pertains to the length of nail.

The nails specified by Simpson for the double hanger are 8-16d into header and 6-16d into joist.
LUS/HUS Double Shear Joist Hangers


You can substitute an N16....2-1/2" x 0.162 thick for the 16d, but only on the header, not the joist.

You cannot use a 1-1/2" teco nail for this hanger. Not a .131, .141, or .148.
!-1/2" tecos always take an adjustment of .64, .77, or .86 off the loads.

Be safe, G
 
  #5  
Old 06-03-09, 05:06 PM
J
Member
Thread Starter
Join Date: Mar 2009
Location: USA
Posts: 78
Received 0 Votes on 0 Posts
Hi G,
I understand the notes about nail substitutions, but they are exactly that - *substitutions* for the primary recommendation. So my question is, why are they recommending nails that don't seem to fit?

It could be that I don't understand where these nails are going, but I don't think so.
 
  #6  
Old 06-03-09, 05:23 PM
Gunguy45's Avatar
Super Moderator
Join Date: Dec 2007
Location: USA
Posts: 21,112
Received 4 Votes on 4 Posts
ok...gotta weigh in..though I'm no Pro of any sort. Jeff you notice on the chart you first linked to..they say "header"? Headers are normally 2x lumber plus 1/2 ply...so the nails wouldn't show. Even if it was something like a rim board..thats normally hidden.

And the cross driven nails holding the joist wouldn't show.

I think they are also looking at max holding power which means the point of the nail barely penetrates the other side..max contact..max hold.

JMO
 
  #7  
Old 06-03-09, 05:34 PM
chandler's Avatar
Banned. Rule And/Or Policy Violation
Join Date: Dec 2005
Location: USA
Posts: 39,964
Received 6 Votes on 6 Posts
The LUS210-2 line gives you the option of 6-16D. It in no way states you have to use a 16D nail, and the length is not to be implied if it is not stated. Use the joist hanger nails sold for that purpose and I think you will be happy. You are transferring weight with every joist you install.
Decks have been built for a long time with this method and I would think we would have heard of problems if there were any.
 
  #8  
Old 06-03-09, 06:23 PM
G
Member
Join Date: Mar 2009
Location: WA
Posts: 1,165
Received 0 Votes on 0 Posts
Jeff, 16d nails or N16 nails have to be used with that hanger.

Look down the left column for it, now go across. 8-16d and 6-16d, means no 1-1/2" material (single) for a header, has to be 3" thick.

Face Mount Hangers Load Table for Solid-Sawn Lumber (Douglas Fir&Southern Pine)

Look at the single joist hanger above yours, you can use 1-1/2"teco's (if 0.148 thick).
You cannot carry 2-2x10 in that hanger with 1-1/2" nails.

This has been like this for over 15 years, yet some installers are not aware of it.

Follow the table across to floor joists , notice the solid line at 10d nails, no can do.

Be safe, G
 
  #9  
Old 06-03-09, 06:37 PM
G
Member
Join Date: Mar 2009
Location: WA
Posts: 1,165
Received 0 Votes on 0 Posts
Chandler, could you tell me how to post my directions to the hanger tables so others may find them easier, please? I have enough trouble typing, let alone working the site. LOL

Google: Simpson

Cick: DIY projects

Click: Joist hangers

Click: LUS

Click: Hanger tables (very first one)

Click: solid sawn, Doug. Fir (first one)

It's like they buryed the tables in their acres of info.

Be safe, G
 
  #10  
Old 06-03-09, 07:31 PM
chandler's Avatar
Banned. Rule And/Or Policy Violation
Join Date: Dec 2005
Location: USA
Posts: 39,964
Received 6 Votes on 6 Posts
I got to it, and just copied and pasted the url here Face Mount Hangers Load Table for Solid-Sawn Lumber (Douglas Fir&Southern Pine)

Not sure if that is what you are looking for. Let me know.
 
  #11  
Old 06-04-09, 06:48 AM
M
Member
Join Date: Dec 2003
Location: USA
Posts: 994
Received 0 Votes on 0 Posts
If you but look on the back of any package of the Simpson HDG nails, it lists the specific hangers the nails should be used on.
 
  #12  
Old 11-18-09, 07:40 AM
T
Member
Join Date: Nov 2009
Location: Nor Cal
Posts: 1
Received 0 Votes on 0 Posts
The only thing missing is factoring in load reduction for the shorter nails. I can't recall which charts I saw them on but there are load reduction calculations in the fine print. Otherwise, every deck built utilizing joist hangers without a "beam" as a ledger would be trouble.
 
  #13  
Old 11-18-09, 08:34 PM
G
Member
Join Date: Mar 2009
Location: WA
Posts: 1,165
Received 0 Votes on 0 Posts
It is in footnote #7, after the first table: http://www.strongtie.com/products/co...ace_ss-df1.asp
Be safe, Gary
 
 

Thread Tools
Search this Thread
 
Ask a Question
Question Title:
Description:
Your question will be posted in: